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experimental support for dynamic loading of gurobi; add MPSolver.CreateSolver() factory method for non C++ languages to check correctly installed linear solver backends and licenses when needed; port all non C++ examples

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This commit is contained in:
Laurent Perron
2020-06-24 18:11:12 +02:00
parent 2f7e8e9eb8
commit d6ecea46ad
42 changed files with 1268 additions and 315 deletions
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16
examples/java/IntegerProgramming.java
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@@ -10,6 +10,7 @@
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.ortools.examples;
import com.google.ortools.linearsolver.MPConstraint;
@@ -27,17 +28,8 @@ public class IntegerProgramming {
System.loadLibrary("jniortools");
}
private static MPSolver createSolver(String solverType) {
try {
return new MPSolver(
"IntegerProgrammingExample", MPSolver.OptimizationProblemType.valueOf(solverType));
} catch (java.lang.IllegalArgumentException e) {
return null;
}
}
private static void runIntegerProgrammingExample(String solverType) {
MPSolver solver = createSolver(solverType);
MPSolver solver = MPSolver.createSolver("IntegerProgramming", solverType);
if (solver == null) {
System.out.println("Could not create solver " + solverType);
return;
@@ -91,7 +83,7 @@ public class IntegerProgramming {
runIntegerProgrammingExample("SCIP_MIXED_INTEGER_PROGRAMMING");
System.out.println("---- Integer programming example with CBC ----");
runIntegerProgrammingExample("CBC_MIXED_INTEGER_PROGRAMMING");
System.out.println("---- Integer programming example with GLPK ----");
runIntegerProgrammingExample("GLPK_MIXED_INTEGER_PROGRAMMING");
System.out.println("---- Integer programming example with CP-SAT ----");
runIntegerProgrammingExample("SAT_INTEGER_PROGRAMMING");
}
}